# US 11,307,084 B2 · Optoelectronic sensor comprising an optical filter element arranged without a gap between first and second part lenses of at least one reception lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,084 B2 - Document ID: US11307084B2 - Status: Granted - Kind: B2 - Application number: 17/308,014 - Filed: 2021-05-04 - Published: 2021-11-11 - Granted: 2022-04-19 - Earliest claimed: 2020-05-05 - Assignees: Sick AG - Applicants: Sick AG - Inventors: Ralf Ulrich Nübling - Web page: https://patentgrep.com/patent/US11307084B2 ## CPC - G01J 1/0488: {with spectral filtering} - G02B 13/16: for use in conjunction with image converters or intensifiers {, or for use with projectors, e.g. objectives for projection TV} - G01J 1/0411: {using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction} - G01J 1/42: using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10) - G01S 7/4814: {of transmitters alone} - G01S 7/4816: {of receivers alone} - G02B 13/006: {at least one element being a compound optical element, e.g. cemented elements} - G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} - G01S 17/10: using transmission of interrupted, pulse-modulated waves (determination of distance by phase measurements G01S17/32) - G01S 17/89: for mapping or imaging - G02B 5/20: Filters (polarising elements G02B5/30) - G02B 5/28: Interference filters - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract An optoelectronic sensor having a reception element and at least one reception lens and an optical filter element, wherein the filter element is arranged without a gap between a first part lens and a second part lens, wherein the part lenses form one of the reception lenses or the reception lens, and wherein the optical filter element has at least one convex or concave shape and received light beams pass through the filter element at the same angle at every entry point or an optoelectronic sensor having a reception element and a reception lens and an optical filter element that is arranged between the reception element and the reception lens, wherein the optical filter element has at least one curved free-form surface so that the received light beams pass through the filter element at the surface of the optical filter element at the same angle at every entry point. ## Claims ### Claim 1 An optoelectronic sensor, comprising: a reception element, at least one reception lens, and an optical filter element, wherein the filter element is arranged without a gap between a first part lens and a second part lens, with the part lenses forming one of the reception lenses or the reception lens, and with the optical filter element having at least a convex or concave shape and received light beams passing through the filter element at the same angle at every entry point. ### Claim 2 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein received light beams pass through the filter element at a perpendicular angle at every entry point. ### Claim 3 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the reception lens is a cylindrical lens and the filter element is a cylindrical body. ### Claim 4 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the first part lens and the second part lens each have different refractive indices. ### Claim 5 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the optoelectronic sensor is a sensor element in accordance with the time of flight method. ### Claim 6 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the sensor is a laser scanner or a camera. ### Claim 7 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein a first surface of the first part lens and a second surface of the second part lens each have a planar, convex, or concave surface. ### Claim 8 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein at least one of the first part lens and the second part lens has a spherical surface. ### Claim 9 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the filter element is composed of glass or plastic. ### Claim 10 (depends on 1) The optoelectronic sensor in accordance with claim 1, wherein the filter element is an optical lens. ### Claim 11 An optoelectronic sensor, comprising: a transmission element, at least one transmission lens, and an optical filter element, wherein the filter element is arranged without a gap between a first part lens and a second part lens, with the part lenses forming one of the transmission lenses or the transmission lens, and with the optical filter element having at least one convex or concave shape and transmitted light beams passing through the filter element at the same angle at every entry point. ### Claim 12 (depends on 11) The optoelectronic sensor in accordance with claim 11, characterized in that transmitted light beams pass through the filter element at a perpendicular angle at every entry point. ### Claim 13 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the first part lens and the second part lens each have different refractive indices. ### Claim 14 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the optoelectronic sensor is a sensor element in accordance with the time of flight method. ### Claim 15 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the sensor is a laser scanner or a camera. ### Claim 16 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein a first surface of the first part lens and a second surface of the second part lens each have a planar, convex, or concave surface. ### Claim 17 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein at least one of the first part lens and the second part lens has a spherical surface. ### Claim 18 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the filter element is composed of glass or plastic. ### Claim 19 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the filter element is an optical lens. ### Claim 20 (depends on 11) The optoelectronic sensor in accordance with claim 11, wherein the transmission lens is a cylindrical lens and the filter element is a cylindrical body. ### Claim 21 An optoelectronic sensor, comprising a reception element, a reception lens, and an optical filter element that is arranged between the reception element and the reception lens, wherein the optical filter element has at least one curved free-form surface so that the received light beams pass through the filter element at the surface of the optical filter element at the same angle at every entry point. ### Claim 22 An optoelectronic sensor, comprising: a transmission element, a transmission lens, and an optical filter element that is arranged between the transmission element and the transmission lens, wherein the optical filter element has at least one curved free-form surface so that the transmitted light beams pass through the filter element at the surface of the optical filter element at the same angle at every entry point.